Difference between revisions of "2n preliminary data analysis"

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   Det E & 0.106 & sr \\
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   Det E | 0.106 | sr \\
 
   DetM & 0.118 & sr \\
 
   DetM & 0.118 & sr \\
 
   Det F & 0.096 & sr \\
 
   Det F & 0.096 & sr \\

Revision as of 02:51, 20 August 2012

Data on [math]MT target/D_2O[/math]:

Run with 2 Al sheets (2x0.678 mm) as bremsstrahlung converter w/o hardener. [math]E_e = 10.5 MeV[/math], Detector G(1/left).

D2OMTT.jpg

Bin-by-bin subtraction of the two timing spectra after normalization:

Subtr D2OMTT.jpg

Data on thick U-target and D2O from 8/13/2012:

Data (detector G(1,2)) were normalized to the gun trigger signal. Runs 3999(D2O) and 4001(no target), and 4011(thick U-target) and 4012(no target).

D2OMTT2.png

ThickUtarg.png


Data on thick U-target,D2O and H2O from 8/16/2012:

Data (detector F(1)) were normalized to the gun trigger signal. Runs 4097(D2O) and 4098(H2O), and 4011(thick U-target) and 4012(no target). [math]E_e = 10.5 MeV[/math]

D2OH2O.png

D2OMTT3.png

Data (detector H(2)) were normalized to the gun trigger signal. Runs 4100(thick U-taget) and 4099(MT target). [math]E_e = 10.5 MeV[/math]

ThickUtargMTtarget.png

Photon flux study.

The current we were running at (3 sheets of Al):

Photon fluxI.png

And when we asked the operator to cut the electron current twice, our photon flux monitor showed:

Photon fluxI half.png


Data on thick U-target,D2O and H2O from 8/17/2012:

Detector layout:

Detector layout2.png


Det E | 0.106 | sr \\ DetM & 0.118 & sr \\ Det F & 0.096 & sr \\ Det G & 0.063 & sr \\ Det H & 0.033 & sr \\ Det K & 0.019 & sr \\ Det I & 0.011 & sr \\ Calibration of detector array efficiency via D2O photodisintegration (run 4111): D20 eff calibr1.png And the rest of the detectors: D20 eff calibr2.png Jitter of the PS detector and "Ilyusha" (placed on the beam) w.r.t. the gun trigger signal (run 4112): Jitter.png H2O calibration run (run 4112): H20 eff calibr1.png And the rest of the detectors: H20 eff calibr2.png Run with MT target (run 4113): MT calibr1.png And the rest of the detectors: MT calibr2.png Thick U-target data (run 4118): R4118 1.png And the rest of the detectors: R4118 2.png Neutron data bank (two production runs 4118 and 4119 added together). Coincidences between two PMTs for each detector are shown below. Neutron bank.png